Pump.



w. w. ROBINSON.

PUMP.

APPLICATION FILED OCT. l5. 19M.

Patented July 4, 1916.

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W. W. ROBINSON.

PUMP.

APPLlcAnoN FILED ocT. l5. |914.

1 1 89,293. Patented July 4, 1916.

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FVITNESSES /VVEN TORI 'UNITED sTATns PATENT carica'.

WILLIAM W. ROBINSON, OF KANSAS CITY, MISSOURI. I

PUMP.

Application led October 15, 1914.

lates more particularly to the valves which admit and exhaust the water into and from the head or upper end of the pump cylinder, said valves being designed to overcome the difficulty now experienced by valves and their seats wearing unevenly and thus permitting water in the cylinder leaking back into the well from which the water has been drawn. I attain this object by providing the valves with means against which the entering and exhausting water impin'ges and thus imparts a rotary motion to said valves, causing them' to grind themselves and their seats evenly throughout their contacting peripheries and `thus maintaining a perfect t at all times.

A further object of the invention is to provide a pump plunger wherein all packing, which is a source of'considerable friction, is entirely eliminated and at the same time leakage between said plunger and the inclosing cylinder is avoided.

Other objects of the invention will hereinafter appear, and in order that said invention may be fully understood, reference will now be made to the accompanying drawings, in which:

Figure l is a central longitudinal section of a pump embodying my invention. Fig. 2 is a plan view of a valve chamber emploved in carrying out the invention. Fig. 3 is a cross section on line III-III of Fig. 1. Fig. 4 is a vertical section, enlarged, of the lower portion of the pump containing one of the valves forming an important feature of the invention. Fig. 5 is a detail side elevation of the valve. Fig. 6 is an inverted plan view of the valve.

1 designates the pump barrel or cylinder,

to the upper end of which is connected al valve chamber 2, which in turn is connected to a stand-pipe 3 through the intermediacy of a coupling 4.

5 designates an operating rod which is reciprocated to effect the pumping of water.

Speccaton of Letters Patent.

Patented July 4, 1916.

Serial No. 866,777.

6 designates a valve cage containing a valve 7 and suitably secured at its upper end to the rod 5 and at its lower end to a bucket or plunger rod 8.

9 designates a concentric sleeve cast integral with the valve chamber 2' and provided at its upper end with a threaded ring 10, carrying a stuffing box 11, provided` withv packing 12 snugly embracing the bucket 8.

14 designates a discharge valve slidably mounted upon the sleeve 9 and having a flanged lower end 15, having a seat upon a flange 16 formed on the lower portion of the sleeve 9. rIhe sleeve 9 and the surrounding chamber 2 are connected by arms 17 (Fig. 2), spaced apart to leave openings 18 to permit the water to gain access to the lgalve 14 and the upper portion of the cham- 19 designates a spring interposed between the stuffing box 11 and the valve 14 to yieldingly-hold the latter to its seat 16.

f 21 designates acircular flange cast integral with the valve chamber Y2 and screwed into the cylinder 1 (Fig. 1). Said flange 21 forms a seat for an inlet valve 22 slidably mounted upon the depending reduced portion 2a of the chamber 2, in the lower part of which ports 20 are formed. Valve 2 is yleldingly held to its seat onthe flange 21 by a coil spring 23 supported by a collar 24 screwed upon the lower end of the chamber 2. The flange 21 has ports 25, which communicate with the ports 20 when the valve 22 1s unseated.

26 designates a hollow plungerV fixed to the lower end of the bucket 8, and below said plunger 26 is a valve cage 27 containing a valve 28 seated by gravity upon a seat 29, formed in the cage 27 which is securedat its upper portion to the cylinder 1. The hollow plunger 25 has a series of parallel grooves 31 around its outer surface. Said grooves become filled with air or water that constitutes a water-tight fit between the plunger 26 and the surrounding wall of the cylinder 1, thus dispensing with the use of packing which creates more or less friction requiring additional power to actuate the pump.

30 designates inlet ports in the cylinder 1, just above the flange 21, to admit water to the ports 25.

The valves 7 and 28, which, as hereinbefore stated, constitute important features of the present invention, are duplicates, eX- cept in size, so I will only describe in detail the lower valve 28. As disclosed more clearly by Figs. el to 6, inclusive, it will be noted that said valve is provided with a conical periphery 3l, a guide stem 32, and a plurality of depending blades 33 curved longitudinally, as shown by Fig. 3. The conical periphery 3l snugly lits the conical seat 29 surrounding an inlet port 33a in the Cage 27, and the guide stem 32 extends upward through an opening 34C in a transverse partition 35, screwed into the upper end of the cage 27 and provided with large openin s 36 for the passage of water.

In practice, the upstroke of the operating rod 5 and the plunger 26 raises the valve 28 and admits water into the lower portion of the cylinder l. Upon the downstroke the plunger 2G forces the water up through the bucket 8, unseating the valve 7 and permitting the water to enter the stand-pipe 3. Also upon the downstroke water is drawn through the upper inlets 301, passes through the ports 25, unseats the inlet valve 22 and flows through the ports into the chamber 2. Upon the next upstroke the plunger 26 lifts the water in the valve chamber 2, and the Water entering the ports 18 raises the discharge valve 14 and enters the standpipe 3.

As the water raises the valve 28 from its seat 29 to enter the cage 27, it impinges against the blades 38 and rotates said valve 28. The rotary movement of the valve continues for a short period as it again becomes seated by gravity and causes said valve to wear its periphery and the seat 2-9 uniformly throughout their areas and not more on one side than the other as would be the case if the valve merely had an up and down movement. Hence a perfect it will always be maintained between the valve and its seat, so that there will be no leakage back into the well.

Having thus described my invention, what I claim and desire to secure by Letters Patent, is:

In a pump element, a cage having an upper tubular portion and a lower contracted tubular portion, a perforated member having a central guiding opening, positioned adjacent the upper end of the upper tubular portion of the cage, a valve seat formed at the upper end of the contracted tubular portion, a valve body engaging the valve seat, said valve body having a stem operating in the central guiding opening, depending blades integral with the valve body said blades being curved radially and having one of their side faces beveled, the inner side edges of said blades tapering downwardly and outwardly and merging into a concavity in the lower side of the valve body, said blades throughout their lengths engaging the inner wall of the depending tubular member whereby during the rotary movement of the valve the conical periphery thereof is at all times in alinement with the valve seat.

In testimony whereof I aix my signature, in the presence of two witnesses..

WILLIAM W. ROBINSON. Witnesses:

F. G. FISCHER, L. J. FISCHER.

Gupte: o! this patent may be obtained for five cents each, by addressing the "Commilstoner of rltexu.

Washington, D. C." 

